Yamaha F100B F100C Outboards Factory Service Manual, Page 269Get this manual
Upper case (F100C) Installing the upper case
1Install the upper mount and bolts into the upper case2Install the bolts 3, and then tighten them to the specified torque6Install the upper mounting nut and lower mounting nut 8, and then tighten them to the specified torquesNOTE: Before tightening the lower mounting nut, be sure to connect the ground lead to the lower mounting bolt7Install the oil pump assembly 9LT